Watch: Hans Zimmer rocks out to Inception, Lion King, Pirates theme at Coachella

Master Hollywood music composer Hans Zimmer made a surprise appearance at Coachella on Sunday. Watch him perform to some of his most famous movie themes.

Pulling in up to 250,000 people over back-to-back weekends with identical lineups, Coachella thrives on surprises -- which appear quickly on social media and send fans scurrying across the grounds.

Zimmer performing The Lion King theme.(Twitter)

German film composer Hans Zimmer, one of the more unlikely Coachella acts, pulled in an open-air evening crowd to a performance featuring his entire band. He rocked out to Inception theme. Watch the video:

He even did a piano recital of his scores to movies such as Pirates of the Caribbean and The Lion King.

He transitioned into Pharrell Williams’ hit Freedom -- which brought the star in himself for a cameo.

Other highlights Sunday included Future Islands, the indie synthpop band whose frontman Samuel T. Herring is a frequent festival draw with his inimitable voice that reaches into a metal-like growl and back.

Spanish indie rockers Hinds enjoyed a surprisingly large crowd with dozens of fans storming the stage in joy -- taking bassist Ade Martin at face value when she said that Spaniards believed in dancing at gigs.

Follow @htshowbiz for more